JP3714626B2

JP3714626B2 - Watering nozzle

Info

Publication number: JP3714626B2
Application number: JP2003179863A
Authority: JP
Inventors: 清彦石井
Original assignee: Toyox Co Ltd
Current assignee: Toyox Co Ltd
Priority date: 2003-06-24
Filing date: 2003-06-24
Publication date: 2005-11-09
Anticipated expiration: 2023-06-24
Also published as: JP2005013812A

Description

【０００１】
【発明の属する技術分野】
本発明は、レバー操作により散水・止水制御する散水ノズルに関する。
詳しくは、複数に分割成形された流路部品の内部に亘って給水流路を形成し、この給水流路の途中に配設された開閉弁を開閉手段の操作により開閉して、ホースから供給された水を給水流路の先端から吐出させる散水ノズルに関する。
【０００２】
【従来の技術】
従来、この種の散水ノズルとして、ノズル本体の基端部に止水シリンダーを嵌挿し接着や溶着で連結固定され、ノズル本体の先端部に筒状のヘットシリンダーを嵌挿し接着や溶着で連結固定されると共に、これらに亘って略Ｌ字状の一体となった給水流路が形成され、上記止水シリンダー内の摺動パイプと連係するレバーの操作により、給水流路内に配備された開閉弁を開閉させ、止水シリンダーの外周に握持部のカバーを接着や溶着で連結固定し、上記ヘットシリンダーの外周には、操作部のノズルヘッドを回転に伴って進退自在に装着したものがある（例えば、特許文献１参照）。
更にこのものは、ノズル本体の基端部に連結された基端固定管の外周面に、回転管を回転自在に嵌挿し、この回転管の外方から止め輪（連結リング）を挿入して、該止め輪の爪部を基端固定管の環状溝部に嵌着させることにより、止め輪と回転管とが一体的に基端固定管の外周で回転可能に取り付けられ、上記回転管及び止め輪の外側には、これらを被覆するカバー体が取り付けられている。
また、内部に開閉弁及びレバーが配備された把持部の上端開口に外筒を固定し、この外筒の内側に内筒が接着や溶着で連結固定されると共に、ノズル本体を前後動可能に支持したものもある（例えば、特許文献２参照）。
更にこのものは、外筒の内側に有底筒状の駆動ねじ体が回転自在に嵌挿され、その内周に対し、ノズル本体に圧入・接着されたプラグを螺合してノズル本体を前後動させると共に、上記外筒の外周に周設した細溝を通して、外からＥ形止め輪が挿入され、その内周を駆動ねじ体の外周溝に嵌合することにより、駆動ねじ体が外筒の内側に対して軸線方向への移動を規制しつつ回転のみ可能としている。
【０００３】
【特許文献１】
特公平６−６１４８９号公報（第２〜３頁、第１〜３図）
【特許文献２】
実用新案登録第２５５０６２０号公報（第２〜４頁、図１〜図４）
【０００４】
【発明が解決しようとする課題】
しかし乍ら、このような従来の散水ノズルでは、複数に分割成形した流路部品同士が接着や溶着などで連結固定されるため、密接部分に配備されたＯリングなどの消耗品を交換できないと共に、不意に損傷させた部品の交換や、動きの悪くなった摺動部分にグリース塗布するなどのメンテナンスができないという問題がある。
そこで、例えばＥ形リングなどの止め輪を使用して流路部品同士を着脱自在に接続する方法も考えられるが、この場合には、下記のような不具合がある。
止め輪は、その内部に形成された給水流路内の水圧が上昇して流路部品同士を引き離そうとする力が作用した際、止め輪とその挿入孔とにクリアランスがあると、水圧により止め輪が外れる方向へ膨らんで脱落する現象が生じ、それにより流路部品同士が分離して水漏れしたり、最悪の場合には自然に分解されてしまう。
特に散水ノズルの流路部品は、殆どが樹脂成型品であるが、樹脂成型品に止め輪の挿入孔を一体成形するため、この挿入孔と止め輪とのクリアランスを無くすることは非常に困難である。
更に止め輪を外部へ露出させて配置した場合には、外から見えるために強度的に不安があると共に、落下時などで止め輪に何かが接触すると、外れる恐れがあり、しかも設計時のデザイン段階での規制があり、デザインに違和感がある。
【０００５】
本発明のうち請求項１記載の発明は、流路部品同士を接合箇所が露出することなく確実に連結してしかも分解可能な散水ノズルを提供することを目的としたものである。
請求項２記載の発明は、止め輪がカバーで覆えないレバー側に外れるのを完全に防止することを目的としたものである。
請求項３記載の発明は、回転移動する止め輪が外れるのを完全に防止することを目的としたものである。
【０００６】
【課題を解決するための手段】
前述した目的を達成するために、本発明のうち請求項１記載の発明は、各流路部品１，２，３，３′の接合箇所に複数の止め輪５ａ，５ｂを装着して相互に連結し、これら流路部品１，２，３，３′の外側にカバー７を、係止手段８により着脱自在に取り付けて、流路部品１，２，３，３′及び止め輪５ａ，５ｂを覆い、このカバー７の内面には、上記止め輪５ａ，５ｂの外面と夫々対向当接する拡径防止部７ａ，７ｂを設けたことを特徴とするものである。
請求項２記載の発明は、開閉手段のレバー６と対向する流路部品１，２の接合箇所に止め輪５ａを装着し、このレバー６には、それが開弁方向へ移動した際に止め輪５ａと対向当接する拡径防止部６ｂを設けたことを特徴とするものである。
請求項３記載の発明は、流路部品１，２，３，３′の先端部にノズルヘッド４を嵌挿して接合させ、この接合箇所に止め輪５ｃを挿入装着して回転自在に連結し、この止め輪５ｃの挿入方向一端側をカバー７で覆うと共に、他端側には該止め輪５ｃへ向けて突出する抜け止め部２ｇを、上記カバー７の開口部７ｄ内に位置させて設けたことを特徴とするものである。
【０００７】
【作用】
請求項１の発明の作用は、各流路部品１，２，３，３′の接合箇所に止め輪５ａ，５ｂを装着して着脱自在に連結した状態で、その外からカバー７を係止手段８により着脱自在に取り付ければ、止め輪５ａ，５ｂがカバー７で覆われると共に、このカバー７の内面に設けた拡径防止部７ａ，７ｂが止め輪５ａ，５ｂの外面と夫々当接することにより、給水路Ｗ内の水圧が上昇しても止め輪５ａ，５ｂが外れる方向へ膨らまないものである。
請求項２の発明の作用は、開閉手段のレバー６と対向する流路部品１，２の接合箇所に装着された止め輪５ａは、カバー７で覆われないレバー６側へ膨らみ易いが、レバー６を開弁方向へ移動させることにより、その拡径防止部６ｂが止め輪５ａに当接して、給水路Ｗ内の水圧が上昇しても止め輪５ａがレバー６側へ膨らまないものである。
請求項３の発明の作用は、ノズルヘッド４の回転操作に伴って止め輪５ｃが回転移動しても、この止め輪５ｃはその挿入方向両側からカバー７と抜け止め部２ｇとで挟み込まれることにより、止め輪５ｃをどちらか方向から挿入しても、カバー７か又は抜け止め部２ｇに突き当たって抜け方向への移動が阻止されるものである。
【０００８】
【発明の実施の形態】
以下、本発明の各実施例を図面に基づいて説明する。
【０００９】
【実施例１】
この実施例は、図１〜図６に示す如く、複数に分割成形された流路部品が、夫々樹脂成型された止水シリンダー１と、ヘッドシリンダー２と、閉塞キャップ３であり、夫々の端部を相互に嵌挿して接合させると共に、これらの接合箇所を複数の止め輪５ａ，５ｂで着脱自在に連結することにより、その内部に略Ｌ字状の給水流路Ｗが形成され、この給水流路Ｗの途中である止水シリンダー１の内部に開閉弁Ｖが配備された場合を示すものである。
【００１０】
詳しくは図１及び図２と図５に示す如く、止水シリンダー１の先端開口部１ａにヘッドシリンダー２の基端部２ａを嵌挿して接合し、この接合部分に亘って開穿された凹溝１ｂ，２ｂに対し、止め輪５ａを装着することにより、両者が軸方向へ抜け止めされると共に、その接合面に形成した廻り止め部１ｃにより回転不能に連結されている。
【００１１】
この止め輪５ａとは、二重に挿入される接合箇所に亘って開穿した凹溝に嵌挿して両者を少なくとも軸方向へ移動不能に接続させる従来周知構造の軸用止め輪であり、図示例ではＥ形リングを使用しているが、それ以外の形状のものを使用しても良い。
更に図示例では、止水シリンダー１の基端部にホース接続部１ｄを介してホース（図示せず）が接続され、これにより水栓から給水される。
【００１２】
ヘッドシリンダー２の中間突出部２ｃには、図１及び図３と図５に示す如く、閉塞キャップ３を嵌挿して接合することにより、ヘッドシリンダー２内の延長通路が閉鎖され、この接合部分に亘って開穿された凹溝２ｄ，３ａに対し、止め輪５ｂとして例えばＥ形リングを装着することにより、両者が軸方向へ抜け止めされると共に回転自在に連結されている。
【００１３】
ヘッドシリンダー２の先端部には、図１及び図４と図５に示す如く、ノズルヘッド４を嵌挿して、これらの対向面に夫々形成されたネジ部２ｅ，４ａを螺合させることにより、ヘッドシリンダー２の先端部に対してノズルヘッド４が軸方向へ進退自在に支持される。
【００１４】
更にノズルヘッド４の基端部に貫通開穿された凹溝４ｂと、これに対向してヘッドシリンダー２の先端部外周面に凹設された凹溝２ｆに対し、止め輪５ｃとして例えばＵ形リングを、貫通された凹溝４ｂのどちらか一方から挿入し装着することにより、ノズルヘッド４と止め輪５ｃが回転自在でしかも軸方向へ所定区間のみ往復動自在に連結されている。
【００１５】
図示例では、ノズルヘッド４を手動で回転操作して進退移動させることにより、ノズルヘッド４の前面から吐出する水が直射・拡散・ジョーロ・シャワーの各状態に切り換えられるようになっている。
【００１６】
また、止水シリンダー１の内部に配備された開閉弁Ｖは、その弁体Ｖ１を軸方向へ移動自在に支持し、この弁体Ｖ１を往復動させる開閉手段としてレバー６が止水シリンダー１の前面側に揺動自在に取り付けられ、図示例の場合には図１に示す如く、弁体Ｖ１とレバー６の間にアームＶ２を揺動自在に配設し、レバー６の手動操作に伴ってアームＶ２を介して弁体Ｖ１が往復動して開閉するようになっている。
【００１７】
このレバー６は、図２及び図５に示す如く、合成樹脂により断面コの字形に成型された樹脂成型品であり、その開口部分６ａが止水シリンダー１の前面側と対向するように配置されている。
【００１８】
そして、上述した流路部品である止水シリンダー１、ヘッドシリンダー２及び閉塞キャップ３とノズルヘッド４の外側には、図１及び図６に示す如く、少なくとも開閉手段のレバー６と対応する面全体が開口したカバー７を、係止手段８により着脱自在に取り付けて、流路部品１，２，３及びノズルヘッド４の基端部外周及び止め輪５ａ，５ｂ，５ｃの全てを覆う。
【００１９】
このカバー７は、上述した流路部品１，２，３及びノズルヘッド４やレバー６と同様に合成樹脂により成型された樹脂成型品であり、本実施例の場合には図６に示す如く、止水シリンダー１、ヘッドシリンダー２及び閉塞キャップ３とノズルヘッド４の基端部と嵌合するように前面側と底面側を開口させている。
【００２０】
更に、カバー７を流路部品１，２，３及びノズルヘッド４の基端部外周に取り付けるための係止手段８は、カバー７の開口側を流路部品１，２，３及びノズルヘッド４と対向するように向け押し込むだけで、互いに係合して外れ防止される取り付け構造である。
【００２１】
本実施例の場合には、止水シリンダー１の基端部の外面及びヘッドシリンダー２の中間部の外面と、これに対応するカバー７の内面に、互いに係合する凸部８ａと凹部８ｂのどちらか一方を夫々形成している。
【００２２】
図示例では、止水シリンダー１の基端部の外面及びヘッドシリンダー２の中間部の外面に凸部８ａを夫々一対ずつ計４個一体に突設し、カバー７の対応位置に凹部８ｂ…を貫通開穿すると共に、上記凸部８ａ…に連続して傾斜面８ｃ…を形成することにより係合し易くしているが、これに限定されず、凸部８ａ…，８ｂ…の配置、形状、個数は他の構造であっても良い。
【００２３】
また、上記カバー７の内面には、前記止め輪５ａ，５ｂの外面と夫々対向当接する拡径防止部７ａ，７ｂを設け、本実施例では、前記止め輪５ｃの外面と対向当接する拡径防止部７ｃも設けている。
【００２４】
前記止め輪５ａは、図２に示す如く、止水シリンダー１の先端開口部１ａとヘッドシリンダー２の基端部２ａとの接合部分に装着されるが、止水シリンダー１の前面側には開閉弁Ｖのレバー６が配置されるため、この前面側を除いた三面を覆うカバー７の内面に少なくとも三方向から拡径防止部７ａ…を一体に形成している。
【００２５】
図示例では、前記止め輪５ａとしてＥ形リングを止水シリンダー１の側方から嵌挿して装着しているが、そのレバー６側はカバー７で覆われず露出し、この露出した部分が給水流路Ｗの水圧上昇により膨らんで外れる可能性がある。
そこで、レバー６を開弁方向へ移動した際に、止め輪５ａのレバー６側に露出する部分と対向当接する拡径防止部６ｂを突設して、止め輪５ａがレバー６側へ膨らむのを阻止する。
【００２６】
前記止め輪５ｂは、図３に示す如く、その外周全体に亘ってカバー７により覆われているため、この止め輪５ａとして装着したＥ形リングに向けて、カバー７の内面に少なくとも三方向から拡径防止部７ｂ…を突設すれば、止め輪５ｂの膨らみが阻止される。
【００２７】
前記止め輪５ｃは、図４に示す如く、ノズルヘッド４の基端部に貫通開穿された凹溝４ｂのどちらか一方から挿入して、その先端に突設された一対の爪部５ｄ，５ｄを係止させるが、本実施例ではカバー７の底面側は開口しているため、この底面側を除いた三面を覆うカバー７の内面に少なくとも三方向から拡径防止部７ｃ…を形成して、止め輪５ｃの抜けを阻止している。
【００２８】
図示例では、前記止め輪５ｃとしてＵ形リングを上方から下向きに挿入して装着した状態では、拡径防止部７ｃ…により抜けが阻止されるものの、ノズルヘッド４の回転操作に伴って止め輪５ｃも回転移動し、カバー７の底面側、即ち図面では下側へ至った際に、衝撃や接触などによりＵ形リングの爪部５ｄ，５ｄの係止が外れると、そのまま下方へ抜け落ちてしまう可能性がある。
【００２９】
そこで、この止め輪５ｃへ向けて突出する抜け止め部２ｇを、ヘッドシリンダー２の中間部にカバー７の底面開口部７ｄ内に位置させて設け、それにより止め輪５ｃが該カバー７の底面開口部７ｄ側へ抜け落ちるのを阻止している。
【００３０】
次に、斯かる散水ノズルの作用について説明する。
先ず図６に示す如く、流路部品である止水シリンダー１、ヘッドシリンダー２及び閉塞キャップ３とノズルヘッド４の接合箇所に止め輪５ａ，５ｂ，５ｃを装着して着脱自在に連結し、この状態で、その外からカバー７を係止手段８により着脱自在に取り付ければ、止め輪５ａ，５ｂ，５ｃの全てがカバー７で覆われると共に、このカバー７の内面に設けた拡径防止部７ａ，７ｂ，７ｃが止め輪５ａ，５ｂ，５ｃの外面と夫々当接する。
【００３１】
それにより、開閉弁Ｖの開閉動作に伴い給水路Ｗ内の水圧が著しく上昇しても止め輪５ａ，５ｂが外れる方向へ膨らむことはない。
その結果、流路部品同士を接合箇所が露出することなく確実に連結してしかも分解可能な散水ノズルを提供できる。
【００３２】
更に本実施例の場合には、開閉手段のレバー６と対向する止水シリンダー１とヘッドシリンダー２の接合箇所に装着された止め輪５ａが、カバー７で覆われないレバー６側へ膨らみ易いが、レバー６を開弁方向へ移動させれば、その拡径防止部６ｂが止め輪５ａに当接して、給水路Ｗ内の水圧が上昇しても止め輪５ａがレバー６側へ膨らまない。
その結果、止め輪５ａがカバー７で覆えないレバー６側に外れるのを完全に防止できるという利点がある。
【００３３】
また、ノズルヘッド４の回転操作に伴って止め輪５ｃが回転移動しても、この止め輪５ｃは、その挿入方向両側からカバー７と抜け止め部２ｇとで挟み込まれるから、該止め輪５ｃをどちらかの方向から挿入しても、カバー７か又は抜け止め部２ｇに突き当たって抜け方向への移動が阻止される。
その結果、回転移動する止め輪５ｃがカバー７の開口部７ｄ側へ外れて抜け落ちるのを完全に防止できるという利点がある。
【００３４】
【実施例２】
この実施例は、図７に示す如く、前記閉塞キャップ３に代えて流量調整シリンダー３′をヘッドシリンダー２内の延長通路に嵌挿して接合し、この接合部分に亘って開穿された凹溝２ｄ，３ａ′に止め輪５ｂを装着して、両者が軸方向へ抜け止めされると共に回転自在に連結され、上記流量調整シリンダー３′に固着した調節つまみ３ｂ′の回転操作により所望の流量に調節可能した構成が、前記図１〜図６に示した実施例１とは異なり、それ以外の構成は実施例１と同じものである。
【００３５】
従って、図７に示す実施例２も、前記図１〜図６に示した実施例１と同様な作用効果が得られる。
【００３６】
尚、前示各実施例では、複数に分割成形された流路部品を、止水シリンダー１と、ヘッドシリンダー２と、閉塞キャップ３としたが、これに限定されず、他の流路部品であっても良い。
更にヘッドシリンダー２の先端部にノズルヘッド４を嵌挿して止め輪５ｃにより回転自在でしかも軸方向へ所定区間のみ往復動自在に連結したが、これに限定されず、ノズルヘッド４を連結しなくても良いし、他の連結方法で連結しても良い。
【００３７】
【発明の効果】
以上説明したように、本発明のうち請求項１記載の発明は、各流路部品１，２，３，３′の接合箇所に止め輪５ａ，５ｂを装着して着脱自在に連結した状態で、その外からカバー７を係止手段８により着脱自在に取り付ければ、止め輪５ａ，５ｂがカバー７で覆われると共に、このカバー７の内面に設けた拡径防止部７ａ，７ｂが止め輪５ａ，５ｂの外面と夫々当接することにより、給水路Ｗ内の水圧が上昇しても止め輪５ａ，５ｂが外れる方向へ膨らまないので、流路部品同士を接合箇所が露出することなく確実に連結してしかも分解可能な散水ノズルを提供することができる。
従って、複数に分割成形した流路部品同士が接着や溶着などで連結固定される従来のものに比べ、Ｏリングなどの消耗品の交換や不意に損傷させた部品の交換が可能となると共に、動きの悪くなった摺動部分にグリース塗布するなどのメンテナンスを行うことができる。
更に止め輪を使用して流路部品同士を着脱自在に接続しただけの従来構造に比べ、流路部品が樹脂成型品で給水流路内の水圧が上昇しても、水漏れや自然分解せず、しかも止め輪が外部へ露出しないから、使用中の落下時などで脱落することがなく、見た目にも不安要素が解消されると共に、デザイン的にも違和感がなくデザイン時の規制がなくなる。
また流路部品を提供すれば、ユーザーで独自の部品の形状・カラーを交換できて、バリエーションが増えるだけでなく、部品の共有化がし易くて、バリエーションの多い商品では部品管理がし易いと共に、廃棄物として排出する場合、分解して分別できるから、リサイクルとして限りある資源を有効利用することができる。
【００３８】
請求項２の発明は、開閉手段のレバー６と対向する流路部品１，２の接合箇所に装着された止め輪５ａは、カバー７で覆われないレバー６側へ膨らみ易いが、レバー６を開弁方向へ移動させることにより、その拡径防止部６ｂが止め輪５ａに当接して、給水路Ｗ内の水圧が上昇しても止め輪５ａがレバー６側へ膨らまないので、止め輪５ａがカバー７で覆えないレバー６側に外れるのを完全に防止できる。
【００３９】
請求項３の発明は、ノズルヘッド４の回転操作に伴って止め輪５ｃが回転移動しても、この止め輪５ｃはその挿入方向両側からカバー７と抜け止め部２ｇとで挟み込まれることにより、止め輪５ｃをどちらの方向から挿入しても、カバー７か又は抜け止め部２ｇに突き当たって抜け方向への移動が阻止されるので、回転移動する止め輪５ｃが外れるのを完全に防止できる。
【図面の簡単な説明】
【図１】本発明の一実施例を示す散水ノズルの縦断正面図である。
【図２】図１の（２）−（２）線に沿える拡大横断平面図である。
【図３】図１の（３）−（３）線に沿える部分的な拡大縦断側面図である。
【図４】図１の（４）−（４）線に沿える部分的な拡大縦断側面図である。
【図５】カバー以外の分解斜視図である。
【図６】カバー装着状態を示す一部切欠斜視図である。
【図７】本発明の他の実施例を示す散水ノズルの縦断正面図である。
【符号の説明】
Ｖ開閉弁Ｗ給水流路
１流路部品（止水シリンダー）２流路部品（ヘッドシリンダー）
２ｇ抜け止め部３流路部品（閉塞キャップ）
３′ 流路部品（流量調整シリンダー）４ノズルヘッド
５ａ，５ｂ，５ｃ止め輪６レバー
６ｂ拡径防止部７カバー
７ａ，７ｂ拡径防止部７ｄ開口部
８係止手段[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a water spray nozzle that performs water spray / water stop control by lever operation.
Specifically, a water supply flow path is formed over the interior of the flow path parts divided into a plurality of parts, and an on-off valve disposed in the middle of the water supply flow path is opened and closed by operating an opening / closing means and supplied from a hose. The present invention relates to a watering nozzle that discharges the discharged water from the tip of a water supply channel.
[0002]
[Prior art]
Conventionally, as a water spray nozzle of this type, a water stop cylinder is inserted into the base end of the nozzle body and connected and fixed by bonding and welding, and a cylindrical head cylinder is inserted and fixed at the tip of the nozzle body by bonding and welding. In addition, a substantially L-shaped water supply flow path is formed over these, and the opening / closing provided in the water supply flow path by the operation of a lever linked to the sliding pipe in the water stop cylinder The valve is opened and closed, the cover of the gripping part is connected and fixed to the outer periphery of the water stop cylinder by bonding or welding, and the nozzle head of the operation part is attached to the outer periphery of the head cylinder so that it can be moved forward and backward as it rotates. Yes (see, for example, Patent Document 1).
Further, in this case, a rotating tube is rotatably fitted on the outer peripheral surface of a base end fixed tube connected to the base end portion of the nozzle body, and a retaining ring (connecting ring) is inserted from the outside of the rotating tube. The retaining ring and the rotating tube are integrally attached to the outer periphery of the base end fixing tube by fitting the claw portion of the retaining ring into the annular groove portion of the base end fixing tube. A cover body for covering these is attached to the outside of the ring.
In addition, an outer cylinder is fixed to the upper end opening of the gripping portion in which an on-off valve and a lever are arranged, and the inner cylinder is connected and fixed to the inner side of the outer cylinder by bonding or welding, and the nozzle body can be moved back and forth. Some have supported it (see, for example, Patent Document 2).
In addition, a bottomed cylindrical drive screw body is rotatably fitted inside the outer cylinder, and a plug press-fitted and bonded to the nozzle body is screwed into the inner circumference of the outer cylinder to move the nozzle body back and forth. The E-type retaining ring is inserted from the outside through the narrow groove provided on the outer periphery of the outer cylinder, and the inner periphery is fitted into the outer peripheral groove of the drive screw body so that the drive screw body is moved to the outer cylinder. Only the rotation is possible while restricting the movement in the axial direction with respect to the inside.
[0003]
[Patent Document 1]
Japanese Examined Patent Publication No. 6-61489 (pages 2 and 3, FIGS. 1 to 3)
[Patent Document 2]
Utility Model Registration No. 2550620 (pages 2-4, FIGS. 1-4)
[0004]
[Problems to be solved by the invention]
However, in such a conventional watering nozzle, the flow path parts divided into a plurality of parts are connected and fixed together by adhesion or welding, so that consumables such as O-rings arranged in close contact cannot be replaced. There is a problem that maintenance such as replacement of parts that have been damaged unexpectedly and grease application to sliding parts that have become inoperable cannot be performed.
Thus, for example, a method of detachably connecting the flow path components using a retaining ring such as an E-shaped ring is conceivable, but in this case, there are the following problems.
When the water pressure in the water supply flow path formed inside the retaining ring rises and a force is applied to separate the flow path components, there is a clearance between the retaining ring and its insertion hole. A phenomenon occurs in which the ring swells and falls off, causing the flow path parts to separate and leak, or in the worst case, to be naturally decomposed.
In particular, the flow passage parts of the watering nozzle are mostly resin molded products. However, it is very difficult to eliminate the clearance between the insertion hole and the retaining ring because the insertion hole of the retaining ring is integrally formed with the resin molded product. It is.
In addition, when the retaining ring is exposed to the outside, there is concern about strength because it can be seen from the outside, and if something comes into contact with the retaining ring, such as when it is dropped, it may come off. There are regulations at the design stage, and the design is uncomfortable.
[0005]
An object of the present invention is to provide a watering nozzle that can reliably connect flow path components to each other without exposing a joint portion and can be decomposed.
The object of the present invention is to completely prevent the retaining ring from coming off to the lever side that cannot be covered by the cover.
The invention described in claim 3 aims to completely prevent the snap ring that rotates and moves from coming off.
[0006]
[Means for Solving the Problems]
In order to achieve the above-described object, the invention according to claim 1 of the present invention is configured such that a plurality of retaining rings 5a and 5b are attached to joint portions of the respective flow path components 1, 2, 3 and 3 'to each other. The cover 7 is detachably attached to the outside of the flow path parts 1, 2, 3, 3 ′ by the locking means 8, and the flow path parts 1, 2, 3, 3 ′ and the retaining rings 5a, 5b are connected. The cover 7 is provided with diameter expansion preventing portions 7a and 7b which are in contact with the outer surfaces of the retaining rings 5a and 5b, respectively, on the inner surface of the cover 7.
According to the second aspect of the present invention, a retaining ring 5a is attached to a joint portion of the flow path parts 1 and 2 facing the lever 6 of the opening / closing means, and the lever 6 is stopped when it moves in the valve opening direction. This is characterized in that a diameter-expansion preventing portion 6b that is in contact with the wheel 5a is provided.
In the invention of claim 3, the nozzle head 4 is fitted and joined to the tip of the flow path components 1, 2, 3 and 3 ′, and a retaining ring 5c is inserted and attached to the joined portion to be rotatably connected. One end side of the retaining ring 5c in the insertion direction is covered with the cover 7, and a retaining portion 2g protruding toward the retaining ring 5c is provided in the other end side so as to be positioned in the opening 7d of the cover 7. It is characterized by that.
[0007]
[Action]
The operation of the first aspect of the invention is to lock the cover 7 from the outside in a state where the retaining rings 5a and 5b are attached to the joint portions of the flow path components 1, 2, 3 and 3 'and are detachably connected. If it is detachably attached by the means 8, the retaining rings 5a and 5b are covered with the cover 7, and the diameter expansion preventing portions 7a and 7b provided on the inner surface of the cover 7 are in contact with the outer surfaces of the retaining rings 5a and 5b, respectively. Thus, even if the water pressure in the water supply channel W rises, the retaining rings 5a and 5b do not swell in the direction of detachment.
According to the second aspect of the present invention, the retaining ring 5a attached to the joint portion of the flow path parts 1 and 2 facing the lever 6 of the opening / closing means is easy to bulge toward the lever 6 side not covered with the cover 7, but the lever By moving 6 in the valve opening direction, the diameter-expansion preventing portion 6b comes into contact with the retaining ring 5a, and the retaining ring 5a does not swell toward the lever 6 even if the water pressure in the water supply channel W rises. .
According to the third aspect of the present invention, even if the retaining ring 5c rotates and moves with the rotation operation of the nozzle head 4, the retaining ring 5c is sandwiched between the cover 7 and the retaining portion 2g from both sides in the insertion direction. Thus, even if the retaining ring 5c is inserted from either direction, the stopper 7 abuts against the cover 7 or the retaining portion 2g and is prevented from moving in the retaining direction.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
[0009]
[Example 1]
In this embodiment, as shown in FIGS. 1 to 6, the flow-path parts divided into a plurality of parts are a water-stop cylinder 1, a head cylinder 2, and a closing cap 3, each of which is resin-molded. The parts are fitted and joined to each other, and these joints are detachably connected by a plurality of retaining rings 5a and 5b, thereby forming a substantially L-shaped water supply flow path W therein. The case where the on-off valve V is arranged in the inside of the water stop cylinder 1 in the middle of the flow path W is shown.
[0010]
Specifically, as shown in FIGS. 1, 2, and 5, the base end 2 a of the head cylinder 2 is fitted and joined to the distal end opening 1 a of the water-stop cylinder 1, and a recess is formed across the joint. By attaching a retaining ring 5a to the grooves 1b and 2b, both are prevented from coming off in the axial direction and are non-rotatably connected by a detent portion 1c formed on the joint surface.
[0011]
This retaining ring 5a is a retaining ring for a shaft having a conventionally well-known structure that is inserted into a recessed groove that is opened through a joint portion that is inserted doubly and that both are connected so as not to move at least in the axial direction. In the example shown, an E-shaped ring is used, but other shapes may be used.
Further, in the illustrated example, a hose (not shown) is connected to the base end portion of the water stop cylinder 1 via a hose connection portion 1d, and water is supplied from the faucet.
[0012]
As shown in FIGS. 1, 3 and 5, the extension passage in the head cylinder 2 is closed to the intermediate projecting portion 2c of the head cylinder 2 as shown in FIGS. By attaching, for example, an E-shaped ring as a retaining ring 5b to the recessed grooves 2d and 3a opened over the two, both are prevented from coming off in the axial direction and are rotatably connected.
[0013]
As shown in FIGS. 1, 4, and 5, the nozzle head 4 is fitted and inserted into the tip of the head cylinder 2, and screw portions 2 e and 4 a formed respectively on these opposing surfaces are screwed together, The nozzle head 4 is supported so as to be movable forward and backward in the axial direction with respect to the tip of the head cylinder 2.
[0014]
Further, for example, a U-shaped as a retaining ring 5c is formed with respect to a concave groove 4b that is penetrated and opened in the base end portion of the nozzle head 4 and a concave groove 2f that is provided in the outer peripheral surface of the distal end portion of the head cylinder 2 so as to face this. By inserting and attaching the ring from either one of the recessed grooves 4b, the nozzle head 4 and the retaining ring 5c are connected to each other so as to be rotatable and reciprocally movable only in a predetermined section in the axial direction.
[0015]
In the illustrated example, the water discharged from the front surface of the nozzle head 4 can be switched to the direct irradiation, diffusion, joro, and shower states by manually rotating and moving the nozzle head 4 forward and backward.
[0016]
Further, the open / close valve V provided in the water stop cylinder 1 supports the valve body V1 so as to be movable in the axial direction, and a lever 6 serves as an open / close means for reciprocating the valve body V1. In the illustrated example, an arm V2 is swingably disposed between the valve body V1 and the lever 6 in the illustrated example, and the lever 6 is operated manually. The valve body V1 reciprocates through the arm V2 to open and close.
[0017]
As shown in FIGS. 2 and 5, the lever 6 is a resin molded product molded in a U-shaped cross section with a synthetic resin, and is arranged so that the opening 6a faces the front side of the water stop cylinder 1. ing.
[0018]
Further, as shown in FIGS. 1 and 6, at least the entire surface corresponding to the lever 6 of the opening / closing means is provided outside the water stop cylinder 1, the head cylinder 2, the closing cap 3 and the nozzle head 4 which are the flow path components described above. The cover 7 having an opening is detachably attached by the locking means 8 so as to cover the flow path components 1, 2, 3 and the outer periphery of the base end of the nozzle head 4 and the retaining rings 5 a, 5 b, 5 c.
[0019]
This cover 7 is a resin molded product molded from a synthetic resin in the same manner as the flow path parts 1, 2, 3 and the nozzle head 4 and the lever 6, and in this embodiment, as shown in FIG. The front surface side and the bottom surface side are opened so as to fit the water stop cylinder 1, the head cylinder 2, the closing cap 3, and the base end portion of the nozzle head 4.
[0020]
Further, the locking means 8 for attaching the cover 7 to the outer periphery of the base end portion of the flow path parts 1, 2, 3 and the nozzle head 4 is arranged so that the opening side of the cover 7 is connected to the flow path parts 1, 2, 3 and the nozzle head 4. It is an attachment structure that is engaged with each other and prevented from coming off simply by pushing in so as to face each other.
[0021]
In the case of the present embodiment, the outer surface of the base end portion of the water-stop cylinder 1 and the outer surface of the intermediate portion of the head cylinder 2 and the inner surface of the cover 7 corresponding thereto are provided with a convex portion 8a and a concave portion 8b that are engaged with each other. Either one is formed.
[0022]
In the illustrated example, a total of four protrusions 8a are integrally projected on the outer surface of the base end portion of the water-stop cylinder 1 and the outer surface of the intermediate portion of the head cylinder 2 respectively, and the recesses 8b. Although it penetrates and pierces and makes it easy to engage by forming the inclined surface 8c ... continuously with the above-mentioned convex part 8a ..., it is not limited to this, but arrangement and shape of convex part 8a ..., 8b ... The number may be other structures.
[0023]
Further, on the inner surface of the cover 7, there are provided diameter-expansion preventing portions 7a and 7b that face and abut against the outer surfaces of the retaining rings 5a and 5b, respectively, and in this embodiment, the diameter increases that abuts against the outer surface of the retaining ring 5c. The prevention part 7c is also provided.
[0024]
As shown in FIG. 2, the retaining ring 5 a is attached to a joint portion between the distal end opening 1 a of the water stopping cylinder 1 and the base end 2 a of the head cylinder 2, but is opened and closed on the front side of the water stopping cylinder 1. Since the lever 6 of the valve V is disposed, the diameter expansion preventing portions 7a... Are integrally formed from at least three directions on the inner surface of the cover 7 covering the three surfaces excluding the front surface side.
[0025]
In the illustrated example, an E-shaped ring is fitted and attached as the retaining ring 5a from the side of the water-stop cylinder 1, but the lever 6 side is exposed without being covered with the cover 7, and this exposed portion is the water supply. There is a possibility that it will swell out due to an increase in water pressure in the flow path W.
Therefore, when the lever 6 is moved in the valve opening direction, a diameter-expansion preventing portion 6b is provided so as to face and abut the portion exposed to the lever 6 side of the retaining ring 5a, so that the retaining ring 5a swells to the lever 6 side. To prevent.
[0026]
As shown in FIG. 3, the retaining ring 5b is covered by the cover 7 over the entire outer periphery thereof. Therefore, the retaining ring 5b is directed to the inner surface of the cover 7 from at least three directions toward the E-shaped ring attached as the retaining ring 5a. If the diameter-expansion preventing portions 7b are protruded, the retaining ring 5b is prevented from bulging.
[0027]
As shown in FIG. 4, the retaining ring 5c is inserted from either one of the recessed grooves 4b that are penetrated and opened at the base end of the nozzle head 4, and a pair of claw portions 5d protruding from the tip thereof. In this embodiment, since the bottom surface side of the cover 7 is open, the diameter expansion preventing portions 7c... Are formed on at least three directions on the inner surface of the cover 7 covering the three surfaces excluding the bottom surface side. This prevents the retaining ring 5c from coming off.
[0028]
In the illustrated example, when the U-shaped ring is inserted and attached as the retaining ring 5c downward from above, the retaining ring 5c is prevented from coming off by the diameter-expansion preventing portion 7c. 5c also rotates, and when it reaches the bottom side of the cover 7, that is, the lower side in the drawing, if the locking of the claw portions 5d, 5d of the U-shaped ring is released due to impact or contact, it will fall out as it is. there is a possibility.
[0029]
Therefore, the retaining portion 2g protruding toward the retaining ring 5c is provided in the middle portion of the head cylinder 2 so as to be positioned in the bottom surface opening portion 7d of the cover 7, so that the retaining ring 5c is opened to the bottom surface of the cover 7. Prevents falling off to the part 7d side.
[0030]
Next, the operation of such a watering nozzle will be described.
First, as shown in FIG. 6, retaining rings 5 a, 5 b, 5 c are attached to the joints of the water stop cylinder 1, the head cylinder 2, the closing cap 3 and the nozzle head 4, which are flow path components, and are detachably connected. In this state, if the cover 7 is detachably attached from the outside by the locking means 8, all of the retaining rings 5a, 5b, 5c are covered with the cover 7, and the diameter expansion preventing portion 7a provided on the inner surface of the cover 7 is covered. , 7b, 7c abut against the outer surfaces of the retaining rings 5a, 5b, 5c, respectively.
[0031]
Thereby, even if the water pressure in the water supply passage W rises significantly with the opening / closing operation of the opening / closing valve V, the retaining rings 5a, 5b do not swell in the direction of detachment.
As a result, it is possible to provide a watering nozzle that can reliably connect the flow path components to each other without exposing the joint portion and can be decomposed.
[0032]
Furthermore, in the case of the present embodiment, the retaining ring 5a attached to the joint between the water stopping cylinder 1 and the head cylinder 2 facing the lever 6 of the opening / closing means tends to bulge toward the lever 6 side not covered with the cover 7. If the lever 6 is moved in the valve opening direction, the diameter-expansion preventing portion 6b comes into contact with the retaining ring 5a, and the retaining ring 5a does not swell toward the lever 6 even if the water pressure in the water supply path W rises.
As a result, there is an advantage that the retaining ring 5a can be completely prevented from coming off to the lever 6 side which cannot be covered with the cover 7.
[0033]
Even if the retaining ring 5c rotates and moves in accordance with the rotation operation of the nozzle head 4, the retaining ring 5c is sandwiched between the cover 7 and the retaining portion 2g from both sides in the insertion direction. Even if it is inserted from either direction, it moves against the cover 7 or the retaining portion 2g and is prevented from moving in the direction.
As a result, there is an advantage that it is possible to completely prevent the rotating retaining ring 5c from coming off to the opening 7d side of the cover 7 and falling off.
[0034]
[Example 2]
In this embodiment, as shown in FIG. 7, in place of the closing cap 3, a flow rate adjusting cylinder 3 'is inserted into and joined to an extension passage in the head cylinder 2, and a concave groove opened over the joining portion. A retaining ring 5b is attached to 2d and 3a ', both of which are prevented from coming off in the axial direction and are rotatably connected to each other, and a desired flow rate is obtained by rotating the adjusting knob 3b' fixed to the flow rate adjusting cylinder 3 '. The adjustable configuration is different from the first embodiment shown in FIGS. 1 to 6, and the other configurations are the same as those of the first embodiment.
[0035]
Therefore, the second embodiment shown in FIG. 7 can obtain the same effects as those of the first embodiment shown in FIGS.
[0036]
In each of the preceding embodiments, the flow path parts divided into a plurality of parts are the water stop cylinder 1, the head cylinder 2, and the closing cap 3. However, the present invention is not limited to this, and other flow path parts may be used. There may be.
Further, the nozzle head 4 is inserted into the tip of the head cylinder 2 and connected by a retaining ring 5c so as to be rotatable and reciprocally movable only in a predetermined section in the axial direction. However, the present invention is not limited to this, and the nozzle head 4 is not connected. You may connect by another connection method.
[0037]
【The invention's effect】
As described above, the invention according to claim 1 of the present invention is in a state in which the retaining rings 5a and 5b are attached to the joint portions of the flow path components 1, 2, 3 and 3 'and are detachably connected. If the cover 7 is detachably attached by the locking means 8 from the outside, the retaining rings 5a and 5b are covered with the cover 7, and the diameter expansion preventing portions 7a and 7b provided on the inner surface of the cover 7 are the retaining rings 5a. , 5b contact each other so that the retaining rings 5a, 5b do not swell in the direction of disengagement even if the water pressure in the water supply passage W rises. And the watering nozzle which can be decomposed | disassembled can be provided.
Therefore, it is possible to replace consumables such as O-rings or parts that have been damaged unexpectedly, compared to conventional ones in which the flow-path components divided into a plurality of parts are connected and fixed by adhesion or welding, etc. Maintenance such as applying grease to sliding parts that have become inoperable can be performed.
Furthermore, compared with the conventional structure in which the flow path parts are detachably connected using a retaining ring, even if the flow path parts are resin molded products and the water pressure in the water supply flow path rises, water leakage and natural decomposition will occur. In addition, since the retaining ring is not exposed to the outside, it does not fall off when it is in use, etc., and the anxiety factor is eliminated in appearance.
Providing flow path parts allows users to change the shape and color of their own parts, which not only increases variations, but also facilitates the sharing of parts. When discharged as waste, it can be decomposed and separated, so that limited resources can be effectively used for recycling.
[0038]
According to the second aspect of the present invention, the retaining ring 5a attached to the joint portion of the flow path components 1 and 2 facing the lever 6 of the opening / closing means tends to swell toward the lever 6 side not covered by the cover 7, By moving in the valve-opening direction, the diameter-expansion preventing portion 6b comes into contact with the retaining ring 5a, and the retaining ring 5a does not swell toward the lever 6 even when the water pressure in the water supply path W rises. Can be completely prevented from coming off to the lever 6 side that cannot be covered by the cover 7.
[0039]
According to the third aspect of the present invention, even when the retaining ring 5c rotates and moves with the rotation operation of the nozzle head 4, the retaining ring 5c is sandwiched between the cover 7 and the retaining portion 2g from both sides in the insertion direction. Even if the retaining ring 5c is inserted from either direction, the stopper 7 abuts against the cover 7 or the retaining part 2g and is prevented from moving in the retaining direction, so that it is possible to completely prevent the rotating retaining ring 5c from coming off.
[Brief description of the drawings]
FIG. 1 is a longitudinal front view of a watering nozzle showing an embodiment of the present invention.
FIG. 2 is an enlarged cross-sectional plan view taken along line (2)-(2) in FIG.
FIG. 3 is a partially enlarged longitudinal sectional side view taken along line (3)-(3) in FIG. 1;
4 is a partial enlarged vertical side view taken along line (4)-(4) of FIG. 1; FIG.
FIG. 5 is an exploded perspective view other than the cover.
FIG. 6 is a partially cutaway perspective view showing a cover mounting state.
FIG. 7 is a longitudinal front view of a watering nozzle showing another embodiment of the present invention.
[Explanation of symbols]
V On-off valve W Water supply flow path 1 Flow path parts (water stop cylinder) 2 Flow path parts (head cylinder)
2g Retaining part 3 Flow path parts (blocking cap)
3 'Flow path parts (flow rate adjusting cylinder) 4 Nozzle heads 5a, 5b, 5c Retaining ring 6 Lever 6b Diameter expansion prevention part 7 Cover 7a, 7b Diameter expansion prevention part 7d Opening part 8 Locking means

Claims

An on-off valve which forms a water supply flow path (W) over the interior of the flow path parts (1, 2, 3, 3 ′) divided into a plurality of parts, and is disposed in the middle of the water supply flow path (W) In the watering nozzle that opens and closes (V) by operating the opening and closing means, and discharges the water in the water supply channel,
A plurality of retaining rings (5a, 5b) are attached to the joints of the respective flow path components (1, 2, 3, 3 ') and connected to each other, and these flow path components (1, 2, 3, 3') are connected to each other. The cover (7) is detachably attached to the outside of the cover member 8 by the locking means (8) to cover the flow path parts (1, 2, 3, 3 ') and the retaining rings (5a, 5b). 7) A watering nozzle, characterized in that a diameter expansion prevention portion (7a, 7b) is provided on the inner surface of the retaining ring (5a, 5b) so as to face the outer surface of the retaining ring (5a, 5b).

An on-off valve which forms a water supply flow path (W) over the interior of the flow path parts (1, 2, 3, 3 ′) divided into a plurality of parts, and is disposed in the middle of the water supply flow path (W) In the watering nozzle that opens and closes (V) by operating the opening and closing means, and discharges the water in the water supply channel,
A retaining ring (5a) is attached to a joint portion of the flow path component (1, 2) facing the lever (6) of the opening / closing means, and when this lever (6) is moved in the valve opening direction, The watering nozzle characterized by providing the diameter-expansion prevention part (6b) which opposes and abuts a retaining ring (5a).

An on-off valve which forms a water supply flow path (W) over the interior of the flow path parts (1, 2, 3, 3 ′) divided into a plurality of parts, and is disposed in the middle of the water supply flow path (W) In the watering nozzle that opens and closes (V) by operating the opening and closing means, and discharges the water in the water supply channel,
A nozzle head (4) is fitted and joined to the tip of the flow path component (1, 2, 3, 3 '), and a retaining ring (5c) is inserted and attached to this joined portion to be rotatably connected, One end side of the retaining ring (5c) in the insertion direction is covered with a cover (7), and a retaining portion (2g) protruding toward the retaining ring (5c) is provided on the other end side of the cover (7). A watering nozzle characterized by being provided in the opening (7d).